Mold for concrete walls.



, 'j No. '13s-,214.- PATBNTBD Ana-4, 1903.

A. 'si ,GRAMBR u MOLD FORUONGRETE WALLS.

APLIoATIoN FILED JAN. 2. 190s.

lllm. lIIII" j UNITED 'STATES Patented August 4, 190e;

PATENT OFFICE.

MoLn `FOR coNcRI-:TE WALLS.

SPECIFICATIONgformingpart of Letters Patent No. 735,214, dated August 4,19'03.

Application led January 2, 1903. Serial No. 137,463. (No model.) i

, lowing to be a full, clear, and exact description of the invention,such as will enable others skilled inthe art to whichitappertains tomake and usethe' same:V

My invention relates to improvements in molds for concrete walls,and-its object is to 4 provide the same with certain new and usefulfeatures hereinafter more fully described, and

particularly p'ointedout in the claims.

My invention consists, essentially, in the combination and arrangementof yokes Sor frames adj ustably connectedto and support- `ing theopposite walls of the mold and connectedto theA same by bolts passingthrough slottedopenings in angle irons attached to the molds and screwsin the ing thewall of the mold. I

Myl'nvention also consists of a collapsible core for forming internalopenings in walls, consisting of side plates, curved end plates,

` an inner plate, to which one of the side plates andthe two end platesare adjustably attached, and a sliding plate and rod for adjusting theendY plates, said rod being also attached to the'yoke, whereby the sidesof the mold and-the case are simultaneously-'adj usted. a j My.invention also sistingof a n series of plates `provided with strips onone side spacing the same apart from the inner surface 'of the inoldandto hold the sameflat, and a .plate-sectionadapted to be insertedoppositethe respective yokes. .All of which'will more fully appear byreferenceto the accompanying drawings, in which-` Figure 1 is a side elevation ofa device' embodyingmyinvention; Fig. 2, a planview` of the same; Fig. 3,an enlarged transverse section of the same, showing one ofthe yokes inside elevation; Fig. 4, a plan view of one 0f the cores; Fig. 5, a sideelevation of the same, one side and a part of each end plate beingremoved; Fig. 6, an elevation of the inner plate O; Fig. 7, a transversesection on the yokes for adjust'- n n n consists of an improved meansforfacing the wall with cement, con- `to set therein.

line 7 7 of Fig. Ll; Fig. 8, a plan of the facingplates; and Fig. 9, anelevation of a portion of one of the -said plates. i

Like letters refer to like parts in all of the figures.

Arepresents a portion of the wall in process of construction; B, thewalls of the mold, which walls are preferably divided into sectionsarranged in opposing pairs, each pair being supported in place by stronginverted- U-shaped yokes, preferably of cast-iron, to which said wallsare adjustablyconnected by means of bolts E, extending through theoutwardly-projecting flanges of the yokes and like portions ofangle-irons C, said irons extending transversely across the outersurfaces of the walls B and firmly secured thereto. These bolts engagehorizontally-extended openings C in the irons C to permit of adjustingthe walls B toward and from each other or inclining the same, wherebythe thickness of the concrete wall or thel inclination of its side maybedetermine-d. As a further means of adjusting the wallsB, I have shownscrews F inserted horizontally in the yokes D and .attached at theirinner ends to the wall B of the mold, whereby the same is moreeffectively adjusted as occasion requires. To raise and adjust this'device at intervals, as the successive portions of the concrete wall areformed, I provide A-shaped frames G having broad platesG` at their lowerends to rest on the top of the concrete wall, whereby the frames aresupported in position over the respective yokes. Each frame is providedwith a windlass H, having a pawl and ratchet I. A suitable rope or chainJ is attached to the flange D of the 'yoke by means of a detachable hookJand wound upon the windlass, whereby the yokes and molds are supportedand vertically adjusted, and the frames may also be readily detached andre- -moved while filling the mold and replaced'and attached to raisethemold aftera section of the concrete wall has been formed and allowed.To form chambers A in the-concrete wall,

I provide collapsible cores in such numbers as may be necessary andsupport the same at intervals, either from the yokes or from transversebars B, placed across the top of the mold,

as occasion requires. This core is made'as j and permit them to movehorizontally.

Y to approach each other.

follows: Outwardly-curved side plates M and semicylindrical plates Nconstitute the walls thereof. Arranged in the center of this core is arod Q, by Which the same is operated. Engaging this rod at one side is aplate O, having a vertical groove or channel in which the rod Q isslidable. To this plate O is attached the outer plates M and N. One ofthe plates M is preferably rigidly attached thereto by a suitable plateR, riveted to the respective plates M and O. The other plate M ispreferably attached to arms S, extending horizontally from the plate O,by means of a yoke T, in which are pins U, slidably engaging the slottedopenings T', whereby the plate M is supported from the'plate O Vandmovably toward and from the same. The end plates N are supported fromthe plate O by means of flangesV, overlapping the said plate andprovided with pins U',

which engage horizontally-slotted openings Of in said plate, and thussupport the plates N To the rod Q is attached a plate P, havingdiagonally slotted openings P', engaging the pins U', whereby as theplate P moves upward plates N are moved inward and when the plate Pmoves downward the plates N are moved outward. This plate P has alsovertically-extended openings S', through which the arms S project, andthus guide the plate in its vertical movement and limit the saidmovement.

To provide means for facing the concrete walls with fine cementcompound, thin plates K are provided, to which are secured transverseribs L, made slightly tapered to be readily withdrawn from the saidfacings. Said ribs also hold these plates ilat and space them apart fromthe inner surface of the wall B of the mold. These plates K are placedbetween the yokes D and parallel with the walls B and with theribs Lengaging the inner surface of the said walls, and smaller plates K'having no ribs are placed across the gapv between the plates K' andbeneath the yokes.

To operate my device, it is first adjusted, as shown in the drawings,and sufficient material placed therein to sustain it in position. Theframes G are then removed and the mold completely filled. The plates Kare then withdrawn, and then the plates K' can be moved edgewise andalso withdrawn. The inner coarser material and the finer outer facingmaterial constituting the concrete wall will then coalesce, and afterthis is sufficiently set the frames G are replaced and bolts E at theside having the screws F are slackened and said screws turned back, thusreleasing the molds from the wall. By turning the windlass the yokes,together with the mold, can now be raised and set in proper position forforming the next section of the wall. In so raising the molds the rods Qwill first raise the plate P relative to the remaining portions of thecore. This will move the end plates N inward and permit the plates MThus the core will be collapsed and free to rise with the mold. The

core can again be expanded by thrusting the rod Q and plate-P downwardto place. The plates K and K are then replaced and the operation offorming another section of the wall A repeated.

The core shown and described is notherein claimed, but is reserved for aseparate application.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

1. ln a mold, the combination of adjustable walls, rigid yokes embracingthe walls, supports for the walls adj ustably attached to the yokes, andextending inward therefrom and 'permanently attached to the walls, toYboth support and adjust the same.

2. In a mold, the combination of Walls constitutin g the sides of themold, a yoke embracing the walls, outwardly-projecting irons on thewalls and adjustably connected to the oke.

y 3. In a mold, the combination of adjustable walls, a yoke extendingtransversely above said walls and downward outside the same, angle-ironsattached to the walls adjacent to the yokes and having slotted openings,and bolts extending through the yokes and through said openings.

4. In a mold, the combination of adjustable walls, a rigid yokeextending transversely above said walls and downward outside the same,angle-irons on the walls extending outward therefrom and adjacent to theyokes and having slotted openings, bolts extending through the yokes andsaid openings, and screws extending through the yokes and attached toone of the walls.

5. In a mold, the combination of adjustable walls, yokes embracing thewalls, screws inA port and horizontally adj ust the same, a frameadapted to rest on the concrete wall and extending above the yoke, awindlass having a pawl and ratchet and mounted on the frame, and a ropeor chain wound on the windlass and detachably attached to the yoke.

7. In a mold for making concrete walls, the

combination of side walls to the mold, rigid yokes extendingtransversely above the walls and downward outside the same, angle-ironshaving slotted openings and attached to the Walls, bolts extendingthrough said openings and through the yoke, frames adapted to rest uponthe concrete wall, and means for raising and supporting the yokes andwalls, mounted on the frames and detachably connected to the yokes.

IOO

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` 8. In a mold for concrete walls, the combination of side walls, rigidyokes extending transversely above the Walls and downward outside thesame, angle-irons attached to one Wall and to the yokes, screwsadjustable in the yokes and attached to the other wall, frames above theyokes and adapted to rest on the concrete wall, and means for raisingthe yokes and walls mounted on the frames and attached to the' yokes.

9. In a mold, the combination of side walls7 rigid yokes extendingtransversely and downward outside the walls, angle-irons rigidlyattached to one wall and adj ustably attached to the yokes, screwsadjustable in the yokes and permanently attached to the other wall,removable frames above the yokes and adapted to rest on the concretewall, and a windlass,V

pawl, and ratchet, mounted on each frame and connected to the respectiveyoke.

10. In combination with molds for making concrete walls, means forfacing the walls v with dierent material, consisting of iiat be placedwithin the molds, ribs attached to said plates to support the same, andto engage the inner surface of the mold, and smaller plates adapted tobe placed beneath the yokes, and to connect the ends of the iirst-namedplates.

l2. In a mold, the combination of side walls, a yoke adjustably attachedto the walls, a collapsible core, a rod to operate and support the core,said rod being also attached to the yoke, and means for raising andsupporting the yoke, whereby the walls and core are simultaneously heldand adjusted by the yoke.

13. In a mold, the combination of side Walls, angle-irons on the walls,a yoke embracing the walls and extending above the same, and alsoadjust-ably attached to the angle-irons, a core consisting of relativelymovable plates, a rod to support the core, means for adjusting theplates attached to the rod, means for connecting the rod to the yoke, aframe adapted to rest on a concrete wall and extending above the yoke,and means for hoisting the yoke attached to the frame.

In testimony whereof I affix my signature in presence of two witnesses.

AUGUSTUS S. CRAMER.

Witnesses:

LUTHER V. MoULroN, GEORGIANA CHACE.

